What does calm, cool and collected mean?

What is the definition of calm, cool and collected?

The meaning of "calm, cool and collected" is:
The definition of "calm, cool and collected" is:

(adjective) relaxed and confident

Example Sentence:

On my first day of school, I was so nervous about everything. My friend was calm, cool and collected!

She was calm, cool and collected before her presentation because she was well-prepared.

From the Blogs:

Mayor Daley is Calm, Cool and Collected


calm, cool and collected

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